That's true. Releasing other open source software using GPL software is much simpler. But if it's desirable to deploy closed source software GPL may not be the right choice unless you have time to sit down and consider the legal ramifications. In many cases there may be none if you use it in the right way but it should be and is being considered when companies decide consider whether or not to use open source software.

That part is often significantly simpler with BSD which is why it's significantly easier to just allow BSD and have a case-by-case basis for GPL.